Machine for making and driving staples.



W. H. BURDEN.

MACHINE FOR MAKING AND DRIVING STAPLES.

APPLICATION FILED 11111.16, 1905. RENEWED NOV. 4. 1911.

1,016,930, Patented Feb. 13,1912.

4 SHEETS-SHEET 1.

W. H. BURDEN.

MACHINE FOR MAKING AND DRIVING STAPLES.

APPLIOATION FILED 11111.16, 1905. RENEWED NOV. 4. 1911.

1,01 6,930, Patented Feb. 13, 1912.

4 SHEETSSHEET 2 l V/TA/ESSES 2. //v VE/V 70R- W. H. BURDEN.

MACHINE FOR MAKING AND DRIVING STAPLES.

APPLICATION FILED JAN116, 1905. RENEWED NOV. 4. 1911. I 1,016,93O vPatented Feb. 13,1912.

4 SHEETSSHBET 3.

jar

l/wr/vassgsc W. H. BURDEN.

MACHINE FOR MAKING AND DRIVING STAPLES. APPLIOATION FILED JAN. 16 I 1,01 6,9369

, 1905. RENEWED NOV. 4; 1911.

Patented Feb. 13, 1912.

UNITED STATES-PATENT. omen WILLIAM H. 303mm, or WINCHESTER,MAssAcHtisErrsnssmNon T UNITED SHOE MACHINERY COMPANY, OF rn'rnnson, NEWJERSEY, a CORPORATION or NEW JERSEY.

To all whom 'it may concern;

Be it known that I, WILLIAM H. BoRnEN, a citizen of the United States,residing at Winchester, in the county of Middlesex and Commonwealth ofMassachusetts, have invented certain Improvements in Machines for Makingand Driving Staples, of which the following description, in connectionwith the accompanying drawings, is a specificatlon, like referencecharacters on the drawings indicating like parts in-the several figures.

This invention relates to machines for inserting fastenings andparticularly to machines which form staples from continuous material,such, for example, as wire, and

the wire-severlng mechanism is mounted on a carrier which is'adapted tobe moved horizontally toward and from the stapleforming dies to causethe severing mechanisnf to out off pieces of Wire of different lengthsand thereby vary the length of the staples uniform length which areformed, and the extent of movement of the Wire-feeding mechanism isgoverned by the position ofsaid carrier relatively to the staple formingdies, so that said feeding mechanism will feed the wire for varyingdistances to cause the center of the severed pieces of wire to rest uponthe inner di'e comprisin one of the members of the staple forming ies.

One of the objects of my invention is to provide means for insuring thatstaples which are formed successively will be of and also that both legsof each staple will be of the same length, and to this end I haveprovided a wire-feeding mechanism which is not affected in its operationby the vibration of the machine and which is moved positively forwardlyand backwardly to feed the wire accurately and uniformly. Improved meansarealso provided for governing the position with relation to the stapleforming means, of the carrier on which the severing mechanism ismounted.

Another object of my invention is to provide improved means foractuating the cut- Speciflcation of Letters Patent.

. MACHINE FOR MAKING AND DRIVING STAPLE S.

the wire-feeding mechanism is mounted on the movable carrier with thewire-severing mechanism. This feeding mechanism includes a rotatablefeed roll which is operatively connected with a lever also mounted onthe carrier, which lever is in turn connected to and actuated from a camon the -main shaft.

This cam, or actuator, comprises a-v groove of uniform width throughoutits length, thus providing a single means for moving the operating meanspositively in two directions, thereby oscillatin' the feeding mechanismforward y and Wardly uniformly. 1

Other advantages of'm'y invention will be hereinafter pointed out.

In the drawings, Figure 1 is a front elevation of the head of a stapleforming machine embodying features of my invention; Figs. 2 and 3 are,respectively, elevations of the left and right hand sides of the head ofthe machine shown in Fig. 1; Fig.4 is an elevation, partly in section,taken on the line wm of Fig. 3 looking .in the direction of the arrow;Fig. 5 is an enlarged detail, in

Patented Feb. 13,1912. 3 Application rfifl ed January 16, 1905, SerialNo; 241,293. Renewed November 4, 1911. Serial No. 658,620.

ter which severs the wirei As herein shown ackfront elevation, showingthe severing meohamachine; Fig. 8 is a detail view in front elevation ofthe staple forming dies, the driver, and the throat block; Fig. 9 is aview similar to Fig. 8 but with the outer die at the end of itsdownward. movement and with the inner diev retracted; Fig. 10 is adetail view showing a staple driven into a piece of stock; Fig. 11 is aperspective view of a staple such as is formed in the machine hereinshown; and Fig. 12 is a plan view of the mechanism which governs the.position of the carrier on which the wire-feeding mechanism. and thesevering mechanism are mounted.

Referring to the drawings, which show a machine embodying the preferredform of my invention, 2 designates a base or standard which supports thehead 4, having mounted therein a main shaft 6 provided with fast andloose pulleys 8 and 10. A lug 11 on a cam 12 on the front end of themain shaft cooperates with a block 14 on the driver bar 16 for elevatingsaid bar and the driver 18 connected thereto after they have beendepressed by the spring 20, such as is commonly used in machines of thistype.

The wire '10 from which the staples are formed is supported in a reel 22carried by an arm 24 fastened to the head of the machine, and said wireis drawn from the reel by feeding mechanism hereinafter described andfed into position to be severed and bent into the form of a staple. Themechanism for bending the wire comprises an inner die or mandrel 30 overwhich the wire is fed, as shown in Fig. 7 and an outer die or former 32that moves downwardly after the wire has been severed and bends, the

severed pieces of wire down over the inner move the carriage and theinner die or mandrel 30 rearwardly after the staple has been formed, soas to carry said die out of alinement with the driver 18, as shown inFig. 9, said driver then descending and driving the staple through theouter die 32 and throat block 13 into the stock, which is held againstthe bottom of said throat block, as shown in Fig. 10. A block 33, see.Figs. 5 and 6, is-fastened to the head of the machine-and is providedwith a groove 35' which cooperates with a groove 37 in the outer die toform a passageway for the driver 18. The carriage 40 is moved forwardly,to place the inner die 30 in operative position in alinement with theouter' die 32, by means of a coiled spring 52that' surrounds the shaftbetween a stationary abutment on "the head and a portion of saidcarriage, see Fig. 3.

The outer die 32 is mounted in a guide- .way formed in the head of themachine,

and any suitable actuating means therefor may be employed. A convenientmeans comprises an arm 60 fastened to rockshaft' 50 and having abifurcated end 62 which embraces a block 64 pivotally connected to theslide 66 which carries the outer die, see dotted lines in Fig. 1. Asecond arm 51 is attached to said rockshaft and is provided with aroller 54 which enters a groove formed in a cam block 55 on the mainshaft, whereby the shaft 50 will be rocked positively in both directionsfor causing 'the arni 60 to elevate and depress the slide 66 whichcarries the outer I die. With 70 and an idle'roll 92 mounted on a studmechanism of this description only a small degree of power is expendedin actuating the outer die, as there is a direct connection between theslide 66 and the arm 60."

In order that staples of different lengths may be formed, the cuttingmechanism is mounted on a carrier 70 which is movable 30 over which thewire is bent to form a staple, and for insuring that both legs of thestaple will be of the same length the degree of movement of thewire-feeding mechanism is governed by the position of said carrierrelatively to the staple-forming dies so that the wire will be fed forvarying. distances to cause the center of the severed piece of wire torest upon. the inner die. The carrier is-slidingly mounted onhorizontally toward and from the inner die stationary rods 71 and 73fastened to the head, and when said .carrier is moved to the left,viewing Fig. 1, the cutting mechanism will be carried away from theinner die and a longer piece of wire will be severed, the

degree of movement of the feeding mecha- IllSIIl being simultaneouslyautomatically increased to feed more wire, so that the center of thepiece of wire which is severed will rest upon the inner die and thusinsure both legs of the staple being of the same length. When thecarrier is' moved to the right, viewing Fig. 1, the severing mechanismwill be brought nearer to the inner die and a shorter piece of wire willbe severed, the degree of movement of the feeding mechanism beingsimultaneously automatically decreased to feed'less wire. I The severingmechanism comprises a stationary cutter 80 fastened to the carrier by aclamping plate 81, and a movable cutter 82 fastened by a clamp 83 to acut-ter carrier end 85 that engages an L-shaped piece 86 on the actuatorbar 87. Said actuator bar I formed by the L-shaped piece and thehookshaped end on the cutter bar ermitting'said cutter bar to movelaterally with the carrier 70 in which it is mounted. This forms a veryeflicient method of actuating the movable cutter as the actuator bar andthe cutter-carrier bar both move in the same direction, so that verylittle power is required for moving the cutter-carrier bar.

' The mechanism for feeding the wire comprises a roll 90 mounted on theend of an oscillating shaft 91 supported in the carrier 97 in a bearing93 which is pivotally connected by a bolt 94 to the carrier. The feedroll 90 is provided with a corrugated groove 95 105 bar 84 which isprovided with a hook-shaped I for receiving the wire, and the idle rollis held yieldingly in engagement with said feed roll, so as to hold thewire in the groove therein by means of a spring 96 which is fastened atits lower end to the stud 97 and atits upper end to an adjustable bolt98 in the carrier. After the feed roll 90 hasbeen moved forwardly in thedirection of the arrow in Fig. 5 to feed the wire it is then movedbackwardly preparatory to the next feeding operation, and during thebackward movement'of said roll the idle roll 92 is s arated from thefeed roll to release the wire, this being effected by a plunger 75movably mounted in the carrier 70, as shown in Fig. 5, and adaptedto beengaged by thelower end of the cutter carrier bar and moved into contactwith an adjustable stop 76 in the bearing 93, so as to rock said hearingon its pivot to carry the idle roll out of en agement with the feedroll. For prev ting the wire from moving dur ng the backward movement ofthe feed roll, a check I 'roller 113 is freely mounted in a tapered slot115 formed in a wire guide 117, so that any backward movement of thewire will cause said roller tomove to the narrow portion of said slotand firmly grip the wire.

The means for operating the feed roll shaft comprises a lever 100fulcrumed on a stud 101 in the carrier 70 and having at its lower end asegment 102 which meshes with a gear 103 fastened to the feed rollshaft.

Said lever is provided at its upper end with a slot 104 which receives aroller 105 fastened to an arm 106 that is connected to a rockshaft 107mounted in bearings 108 on the head of the machine, and fastened to saidi shaft is a second arm 110 provided with a roller 111 which travels ina groove 112 in the cam block 55 on the main shaft, forming an actuator.With this mechanism rotar movement of the main shaft imparts througiithe use of a simple means an oscillating movement to the arm 106 forcausing lever to rock the feed roll shaft positively forwardly andbackwardly. The positive movement in both directions which is impartedto the feed roll prevents it from overthrowing, and thereby feeding morewire than is required, and also insures a feeding mechanism which willnot be affected in its operation by the vibration of the machine.

As the rockshaft 107 is mounted in the head of the machine, the extentof movement of arm 106 will be uniform at each cycle of operations ofthe machine, and as the lever 100 is fulcrumed on the carrier, movementof said carrier will change the relation of pivotal point 101 to thepath of movement of roller so that the full extent of the oscillation ofarm 106 will be transmitted more or less directly to lever.

105 the end of lever 100 which carries se be actuated to feed the wirethrough a greater distance. If the carrier be moved in the oppositedirection, the three points will be brought more nearly into their rightangular position and the wire will be fed through a shorter distance.

The means herein shown for actuating the carrier 70 comprises a linkfastenedto a downwardly projecting pin 121 on the carrier, see Fig. 4,said link being provided at its other end' with a roller 122 whichenters a cam groove formedin a controlling plate 124 (Fig. 12). Thecontrolling plate is fulcrumed on a stud 125 in a bracket 126 projectingfrom the right-hand side of the head of the machine, and a handle 127which is pivotally connected at 128 to said plate provides a means formoving said plate to cause the cam groove therein to impart forproducing staples of a predetermined length without calculation by theoperator. The machine herein shown is provided with four stops, whichenable the operator to quickly move the carrier into position forproducing four different lengths of staples, sald stops comprisingplates 130, 131, 132 and 133 which are adjustably fastened to thebracket 126. The stops 130 and 131 are superimposed upon the stops 132and 133 respectively and limit the movement of the controlling plate forpositioning the carrier to produce the longest and shortest staples tobe formed. The handle is provided with a toe 145, and when said handleis in its normal position said toe will cooperate with the stops 132 and133, but'by swinging said handle upwardly on its pivot the toe will bemoved out of alinement with the stops 132V and 133 and will thencooperate with stops 130 and 131 when the controlling plate isoscillated. As the controlling plate is locked in any position ,to whichit may be adjusted there is no liability of its moving accidentally soasto move the carrier and thus change the length of the staples which arebeing formed, and as said plate imparts a positive movement to thecarrier its position relatively to the staple-forming dies is accuratelygoverned.

Having fully described my invention,

what I claim as new and desire to secure by Letters Patent of the UnitedStates, is

1. In a machine for inserting fastenings, the combination with means forsevering fastenings from a wire, of means for feeding a proper length ofwire to form the fastening comprising a rotatable wire feeding roll,operating, means connected therewith, and means'to insure feeding of apredetermined length of wire comprising means to oscillate said feedingroll through said operating means positively forwardly and backwardlysaid wire feeding means having provision for varying the amount of thepositive oscillation.

2. In a machine for inserting fastenings, the combination with means forsevering fastenings from a wire, of means for feeding a. 'proper lengthof wire to form a fastening comprising a rotatable wire feeding roll,operating means connected therewith, and means to insure feeding of apredetermined length of wire comprising an actuator for said operatingmeans constructed and arranged to oscillate said means positivelyforwardly and backwardly said wire feeding means having provision forvarying the amount of the positive oscillation.

3. In a machine of the class described,

wire-feeding mechanism including a rotatable feed roll, operating meansconnected therewith, an actuator for said operating means constructedand arranged to oscillate said means positively forwardly, andbackwardly, and means for varying the extent of movement imparted tosaid mechanism.

'4. In a machine .of the class described, staple forming means, wirefeeding wheels, means for causing said wheels to move in unison,operating means for moving positively in both directions one of saidfeeding wheels, forwardlly with the wire and backi one direction to feedthe wire and positively in the reverse direction preparatory to eachfeeding operation, wire cutting means, and

means for effecting simultaneously both an adjustment of said wirefeeding mechanism and its positive actuating means to cause a diflerentlength of wire to be fed and a corresponding relative adjustment of thecut- .ting means and the staple forming mechanism to keep the legs ofthe staple equal.

6. In a machlne ofv the class described, staple-forming mechanism, acarrier movable relatively to said mechanism, wire-feeding mechanismmounted on said carrier, a lever mounted on said carrier and operativelyconnected with the feeding mechanism, and a single means for actuatingsaid lever positively in two directions.

7. In a machine of the class described, a movable carrier, a shaftsustained by said carrier and provided with a feed roll, a lever mountedon said carrier, a connection between one end of said lever and saidshaft, means for actuating said lever. and a loose pivotal connectionbetween the other end of said lever and its actuating means, said con-.

nection affording provision for nonpivotal relative movement of theconnected parts when. in predetermined positions and being so, arrangedwith respect to the direction of movement of said actuatin means that amovement of the carrier varies the extent of movement imparted to thelever.

8. In a machine of the class described, a movable carrier, a shaftsustained by said carrier and provided with a feed roll, a lever mountedon said carrier, ,a connection between one end OfSLlCl lever and saidshaft,

means for actuating said lever, and a 'pinand-slot connection betweenthe other end of said lever and its actuating means soarranged withrespect to the direction of movement of said actuating means that amovement of the carriervaries the extent of movement imparted to thelever.

9. In a machine of the class described, staple-forming mechanism, acarrier, a shaft mounted in saidcarrier and provided with a pinion and afeed roll, a slotted feed-actuating lever mounted on said carrier andhaving rack teeth at one end which cooperate with said pinion, apositively-actuated lever mounted on a stationary fulcrum and providedat its lower end with means for engaging the'slot in the feed-actuatinglever, and means for moving said; carrier toward and from thestaple-forming mechanism to vary the extent of movement which isimparted to said feed-actuating lever.

10. In a machine of the class described,

staple-forming dies, a movable carrier pro- .dies comprising a movablemember, a connection between said carrier and movable member, aplurality of sets of stops for limiting the movement of said movablemember, and a device carried by said movable member and movableindependently thereof, constructed to engage-with any one of said stopsat the will of the operator.

11. In a machine of the class described, staple-forming dies, a movablecarrier provided with wire-feeding and wire-severing mechanism, andmeans for controlling the position of said carrier relatively to said'dies comprising a movable member, a connection between said carrier andmovable member, a plurality of sets of stops for limiting the movementof said movable member, and a movable handle carried by said movablemember'and adapted to co operate with one set of stops when the handleis in one position and with a difierent set of stops when the handle isin a different position.

12. In a machine of the class described, staple-formin dies, a movablecarrier provided with wire feeding and wire-severing mechanism, anoscillating controlling plate provided with a cam for governing theposition of said carrier relatively to said dles, a connection betweensaid cam and carrier,- a plurality of sets of adjustable stops fortrolling plate provided with a cam and pivotally mounted on a bracket'on the head, a connection between said cam'and carrier, a plurality ofsets of stops adj ustably fastened to said bracket for limiting themovement of said controlling plate, and a movable handle carried by saidcontrollingplate and adapted to cooperate with one set of stops when thehandle is in one position and with a different set of stops when thehandle is in a different position.

In testimony whereof I have signed my name to this specification inthepresence of two subscribing witnesses.

. WILLIAM H. BORDER- Witnesses:

WELLS L. Cnonon, ARTHUR L. Russian.

